:root {
  --bg: #f7f6fc;
  --text: #17152a;
  --muted: #5d5a73;
  --accent: #6c4cff;
  --accent-2: #c44cff;
  --accent-3: #2fc4e8;
  --line: rgba(80, 60, 160, 0.14);
  --glass: rgba(255, 255, 255, 0.62);
  --glass-strong: rgba(255, 255, 255, 0.82);
  --ok: #2f9e6e;
  --warn: #d98c1f;
  --bad: #d64545;
  --blob-a: rgba(108, 76, 255, 0.35);
  --blob-b: rgba(196, 76, 255, 0.28);
  --blob-c: rgba(47, 196, 232, 0.26);
}
/* Tema: automático según el dispositivo; el botón de sol/luna fija data-theme="light"|"dark" en <html>. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d0c16;
    --text: #eeedf7;
    --muted: #a7a4c0;
    --accent: #9d88ff;
    --accent-2: #d98cff;
    --accent-3: #5fd6f2;
    --line: rgba(190, 175, 255, 0.13);
    --glass: rgba(26, 24, 42, 0.55);
    --glass-strong: rgba(30, 28, 48, 0.78);
    --blob-a: rgba(108, 76, 255, 0.40);
    --blob-b: rgba(196, 76, 255, 0.26);
    --blob-c: rgba(47, 196, 232, 0.20);
  }
}
:root[data-theme="dark"] {
  --bg: #0d0c16;
  --text: #eeedf7;
  --muted: #a7a4c0;
  --accent: #9d88ff;
  --accent-2: #d98cff;
  --accent-3: #5fd6f2;
  --line: rgba(190, 175, 255, 0.13);
  --glass: rgba(26, 24, 42, 0.55);
  --glass-strong: rgba(30, 28, 48, 0.78);
  --blob-a: rgba(108, 76, 255, 0.40);
  --blob-b: rgba(196, 76, 255, 0.26);
  --blob-c: rgba(47, 196, 232, 0.20);
}
.theme-toggle { margin-left: 18px; width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--glass); color: var(--text); cursor: pointer; display: inline-flex; align-items: center;
  justify-content: center; flex: none; }
.theme-toggle:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .sun { display: none; }
:root[data-resolved="dark"] .theme-toggle .sun { display: block; }
:root[data-resolved="dark"] .theme-toggle .moon { display: none; }
nav { display: flex; align-items: center; }
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-x: hidden;
}
a { color: var(--accent); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* Fondo: manchas de color difuminadas que se mueven despacio y con el scroll (parallax en script.js) */
.aurora { position: fixed; inset: 0; z-index: -2; pointer-events: none; overflow: hidden; }
.aurora .blob { position: absolute; border-radius: 50%; filter: blur(80px); will-change: transform; }
.aurora .a { width: 620px; height: 620px; background: var(--blob-a); top: -160px; left: -120px; animation: drift-a 22s ease-in-out infinite alternate; }
.aurora .b { width: 520px; height: 520px; background: var(--blob-b); top: 30vh; right: -160px; animation: drift-b 26s ease-in-out infinite alternate; }
.aurora .c { width: 560px; height: 560px; background: var(--blob-c); top: 85vh; left: 20vw; animation: drift-c 30s ease-in-out infinite alternate; }
@keyframes drift-a { to { translate: 120px 80px; } }
@keyframes drift-b { to { translate: -140px 60px; } }
@keyframes drift-c { to { translate: 100px -90px; } }
.grain { position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.35;
  background-image: radial-gradient(var(--line) 1px, transparent 1px); background-size: 26px 26px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 70%); }

header.top { position: sticky; top: 0; z-index: 10; backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 60%, transparent); border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.logo { font-weight: 800; font-size: 20px; color: var(--text); text-decoration: none; letter-spacing: -0.02em; display: flex; align-items: center; }
.logo .mark { width: 26px; height: 26px; margin-right: 8px; display: block; }
.logo span { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 22px; font-size: 15px; }
nav a:hover { color: var(--text); }

.hero { padding: 96px 0 84px; text-align: center; }
.badge { display: inline-block; padding: 6px 14px; border-radius: 999px; font-size: 13.5px; font-weight: 600;
  background: var(--glass); border: 1px solid var(--line); color: var(--muted); backdrop-filter: blur(8px); }
.hero h1 { font-size: clamp(38px, 6.4vw, 72px); line-height: 1.04; letter-spacing: -0.035em; margin: 22px auto 0; max-width: 13em; }
.hero h1 em { font-style: normal; background: linear-gradient(100deg, var(--accent), var(--accent-2) 55%, var(--accent-3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  white-space: nowrap; display: inline-block; padding: 0 0.04em 0.1em; }
.hero p.lead { font-size: 20px; color: var(--muted); max-width: 36em; margin: 24px auto 0; }
.ctas { margin-top: 34px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.cta { display: inline-block; padding: 14px 24px; border-radius: 12px; font-weight: 600; text-decoration: none;
  background: linear-gradient(110deg, var(--accent), var(--accent-2)); color: #fff;
  box-shadow: 0 10px 30px -10px var(--accent); transition: transform .2s, box-shadow .2s; }
.cta:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -12px var(--accent); }
.cta.ghost { background: var(--glass); color: var(--text); border: 1px solid var(--line); box-shadow: none; backdrop-filter: blur(8px); }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; max-width: 760px; margin: 60px auto 0; }
.stat { background: var(--glass); border: 1px solid var(--line); border-radius: 16px; padding: 18px; backdrop-filter: blur(12px); }
.stat b { display: block; font-size: 30px; letter-spacing: -0.02em; background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat span { color: var(--muted); font-size: 14px; }

section { padding: 84px 0; }
.eyebrow { font-size: 13px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); }
section h2 { font-size: clamp(28px, 3.6vw, 40px); letter-spacing: -0.025em; line-height: 1.15; margin: 10px 0 12px; }
section p.sub { color: var(--muted); max-width: 40em; margin-bottom: 36px; font-size: 18px; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.card { background: var(--glass); border: 1px solid var(--line); border-radius: 18px; padding: 24px;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); transition: transform .25s, border-color .25s; }
.card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.card h3 { font-size: 18px; margin-bottom: 8px; letter-spacing: -0.01em; }
.card p { color: var(--muted); font-size: 15.5px; }
.step { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font-weight: 800; margin-bottom: 14px; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 8px; vertical-align: middle; }

.quote { position: relative; border-radius: 24px; padding: 48px; overflow: hidden;
  background: linear-gradient(120deg, color-mix(in srgb, var(--accent) 18%, var(--glass-strong)), var(--glass-strong));
  border: 1px solid var(--line); backdrop-filter: blur(14px); }
.quote::before { content: "\201C"; position: absolute; top: 14px; right: 28px; font-size: 120px; line-height: 1;
  color: var(--accent); opacity: 0.18; font-family: Georgia, serif; }
.quote blockquote { position: relative; font-size: clamp(21px, 2.6vw, 28px); line-height: 1.4; letter-spacing: -0.015em; max-width: 30em; }
.quote cite { display: flex; align-items: center; gap: 12px; margin-top: 22px; font-style: normal; }
.quote cite i { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: inline-flex; align-items: center; justify-content: center; color: #fff; font-style: normal; font-weight: 700; }
.quote cite b { display: block; }
.quote cite span { color: var(--muted); font-size: 14.5px; }

.sample { display: flex; gap: 36px; align-items: center; }
.sample .mock { flex: 0 0 340px; background: var(--glass-strong); border: 1px solid var(--line); border-radius: 18px; padding: 20px;
  font-size: 13.5px; box-shadow: 0 30px 60px -30px rgba(40, 20, 120, 0.45); transform: rotate(-2deg); backdrop-filter: blur(14px); }
.mock .bar { height: 54px; border-radius: 10px; background: linear-gradient(120deg, var(--accent), var(--accent-2)); margin-bottom: 14px;
  color: #fff; font-weight: 700; padding: 10px 14px; font-size: 14px; }
.mock .row { display: flex; gap: 10px; align-items: baseline; margin-top: 4px; }
.mock .n { font-weight: 800; color: var(--accent); font-size: 24px; }
.mock .q { color: var(--muted); border-left: 3px solid var(--line); padding-left: 9px; margin-top: 9px; }

ul.check { list-style: none; }
ul.check li { padding-left: 28px; position: relative; margin: 8px 0; color: var(--muted); }
ul.check li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 800; }

.contact { text-align: center; border-radius: 24px; padding: 56px 24px; border: 1px solid var(--line);
  background: radial-gradient(120% 140% at 50% 0%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%), var(--glass);
  backdrop-filter: blur(14px); }
.contact p.sub { margin: 0 auto 28px; }

footer { padding: 40px 0 60px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); }

/* Aparición suave al hacer scroll (script.js añade .in) */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .aurora .blob { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .cta, .card { transition: none; }
}
@media (max-width: 760px) {
  .grid, .grid.two, .stats { grid-template-columns: 1fr; }
  .sample { flex-direction: column; }
  .sample .mock { flex: none; width: 100%; transform: none; }
  nav a:not(.keep) { display: none; }
  .hero { padding: 48px 0 40px; }
  .hero h1 { font-size: 36px; }
  .hero p.lead { font-size: 17.5px; }
  section { padding: 40px 0; }
  section p.sub { margin-bottom: 24px; }
  .stats { margin-top: 40px; }
  .quote { padding: 28px 22px; }
  .quote::before { font-size: 90px; top: 8px; right: 18px; }
  .contact { padding: 40px 20px; }
}